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Rad Protection
AART Reg Review
Questionelieved to result from | Answer |
---|---|
Frequency and energy are ________ related? | Directly pg 225 |
Frequency and energy are _________ related to wavelenght? | Inversely pg 225 |
What are the 2 types of radiation produced? | Bremsstrahlung and Characteristic radiation pg 227 |
The gradual decrease in exposure rate as ionizing radiation passes through tissue is called __________? | Attenuation pg 227 |
What are the 2 most common interaction between x-rays and tissue cells? | Compton scatter and Photoelectric effect pg 229 |
Carcinogenesis, cataractogenesis, and lifespan shortening are characters of ______ _________? | Late Effects pg 231 |
This is believed to result from radiation-induced death to a large group of tissue cells, resulting in serious functional impairment? | Deterministic effects pg 232 |
T of F? young cells, undifferentiated cells, and cells with high reproductive activity are highly radiosensitive? | True pg 233 |
This is defined as the average annual gonadal dose to the population of childbearing age and estimated to be 20 mrem ..... ? | Geneticallysignificant dose pg 239 |
NCRP states that collimators must be accurate within __%? | 2% pg 252 |
NCRP states that the PBL must be accurate within __% of the SID? | 3% pg 252 |
NCRP guidelines state that equipment operating above 70 kVp must have a minumun total filtration of _____ mm Al equivalent. | 2.5 mm Al pg 254 |
NCRP guidelines state that equipment operation between 50 and 70 kVP must have at least ___mm Al equivalent filtration. | 1.5 mm Al pg 254 |
State the 3 situations when gonadal shielding should be used? | If the gonads lie within 5cm of collimated beam, if the patient is within reproductive years, and if the exam diagnostic objectives permit pg 255 |
Name the 3 types of gonadal shields? | flat contact, shadow, and contour contact pg 255 |
Due to the fact that the primary x-ray beam has a ____________ (heterogeneous), the entrance dose or skin dose is dignificantly greater than the exit dose. | polyenergetic pg 257 |
What is the best way to reduce the number of repeats? | By having effective communication with the patient pg 260 |
What is the SID for a fixed fluoro and mobile fluoro tube? | 15in for the fixed and 12in for the mobile pg 263 |
The tabletop intensity from the fluoroscopic beam must be fewer that ___ R/min | 10 R/min pg 263 |
Lead aprons and gloves must be at least ____ Pb equivalent? | 0.25 Pb pg 271 |
What is the SI unit for Rad and for Rem? | the SI unit for Rad is Gray(Gy) and the SI unit for Rem is Sivert(Sv) pg 281 |
Name 4 person radiation monitors? | OSL, Thermoluminescent dosimeter, flim badge, and pocket dosimeter pg 283 |
What is the unit of exposure used to describe the quantity of ionization in air? | roentgen (R unit) pg 289 |
NCRP require occupationally exposed individuals +18yrs do not recieve exposures in excess of __ rem | 5 rem pg 288 |
Monthly fetal dose mut not exceed ____? | 0.05 rem or 0.5 mSv pg 289 |